Toyota Tacoma Quiz
Air Conditioning

Air Inlet Damper Position Sensor Circuit (B1432/32)

In this manual: Air Conditioning
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~2min read
DESCRIPTION

This sensor detects the position of the air inlet damper and sends the appropriate signals to the air conditioning amplifier assembly. The position sensor is built into the No. 1 air conditioning servo assembly (fresh/recirculation damper).

DTC No.

DTC Detection Condition

Trouble Area

B1432/32

Short to ground or power source circuit air inlet damper position sensor circuit.
  • No. 1 air conditioning servo assembly (fresh/recirculation damper)
  • Harness or connector
  • Air conditioning amplifier assembly
WIRING DIAGRAM PROCEDURE PROCEDURE

  1. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Operate the recirculation/fresh switch.

(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.

(f) Check the value(s) by referring to the table below.

Air Conditioner

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Air Inlet Damper Position

Air inlet damper servo motor actual position /

Air inlet damper servo motor actual position / Min.: -14.0%

Max.: 113.5%

FRESH: 0.0%

RECIRCULATION: 100.0%

-

Air Inlet Damper Target

Air inlet damper servo motor target position /

Min.: -14.0%

Max.: 113.5%

FRESH: 0.0%

RECIRCULATION: 100.0%

-

OK:

The display is as specified in the Normal Condition column.

Result

Proceed to

NG

A

OK (When troubleshooting according to Problem Symptoms Table)

B

OK (When troubleshooting according to the DTC)

C
B

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
C

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY
A

  1. INSPECT NO. 1 AIR CONDITIONING SERVO ASSEMBLY (FRESH/RECIRCULATION DAMPER)

(a) Remove the No. 1 air conditioning servo assembly (fresh/recirculation damper) (See page (b) Inspect the No. 1 air conditioning servo assembly (fresh/recirculation damper) ).

(b) Inspect the No. 1 air conditioning servo assembly (fresh/recirculation damper) (See page ).

NG

REPLACE NO. 1 AIR CONDITIONING SERVO ASSEMBLY (FRESH/RECIRCULATION DAMPER)
OK

  1. CHECK HARNESS AND CONNECTOR (NO. 1 AIR CONDITIONING SERVO ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY)

(a) Disconnect the D29 No. 1 air conditioning servo assembly (fresh/recirculation damper) connector.

(b) Disconnect the A35 and A36 air conditioning amplifier assembly connectors.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

D29-1 (SG) - A36-13 (S5-2)

Always

Below 1 Ω

D29-2 (TPI) - A35-6 (TPI)

Always

Below 1 Ω

D29-3 (S5) - A35-16 (SG-3)

Always

Below 1 Ω

D29-1 (SG) or A36-13 (S5-2) - Body ground

Always

10 kΩ or higher

D29-2 (TPI) or A35-6 (TPI) - Body ground

Always

10 kΩ or higher

D29-3 (S5) or A35-16 (SG-3) - Body ground

Always

10 kΩ or higher
OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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